Story highlights Six dogs will be used to fetch balls on two days of the tournamentThe dogs were all abandonedLast year four dogs were used and they were all adopted(CNN) A hit last year, ball dogs are back at a tennis tournament in Sao Paulo. Four dogs from local shelters were showcased 12 months ago during the clay-court tournament in Brazil's largest city -- and all four were eventually adopted. It was a barking good idea, then. This time around, six canines ranging in age from four to 10 -- Cindy, Nanda, Pretinha, Mia, Arlete and Ovelha -- will be fetching balls during the warmups on the semifinal and final days, March 4-5.

Source: CNN February 23, 2017 14:48 UTC